Sedimentological fingerprints of recent earthquakes in lake sediments: A case study on the North Anatolian Fault (NAF), Turkey

in EOS : Transactions, American Geophysical Union (2008, December), 89(53)(Fall Meet. Suppl.), 21-1919

Sedimentological traces of earthquakes in recent lakes sediments along the North Anatolian Fault, Turkey

Conference (2008, October)

Sédimentologie des carbonates frasniens des Ardennes: faciès, susceptibilité magnétique et géochimie.

Conference (2002)

Sédimentologie et Coraux du bioherme de marbre rouge frasnien ("F2j") de Tapoumont (Massif de Philippeville, Belgique)

in Annales de la Société Géologique de Belgique (1987), 110

Sédimentologie et diagenèse des monticules micritiques frasniens "F2j" de Belgique

Doctoral thesis (1990)

Sédimentologie et susceptibilité magnétique du Fransien moyen en Belgique, exemples des coupes de Tailfer et d’Aywaille

Conference (2002)

Sedimentology and correlations of Middle Frasnian platform sections (from Tailfer to Villers-le-Gambon, Belgium)

in Aardkundige Mededelingen (2002), 12

Sedimentology and magnetic susceptibility of Mississippian (Tournaisian) carbonate sections in Belgium

in Bulletin of Geosciences (2013), 88(1), 69-82

Magnetic susceptibility (MS) and biostratigraphy have been used to correlate better the reference sections of Belgian Tournaisian, the Rivage road and railway sections and the Gendron-Celles railway ... [more ▼]

Magnetic susceptibility (MS) and biostratigraphy have been used to correlate better the reference sections of Belgian Tournaisian, the Rivage road and railway sections and the Gendron-Celles railway section. These 200 m thick time-equivalent sections are about sixty kilometres apart and belong to two different sedimentation areas: a shallow ramp setting for Rivage (Condroz Sedimentation Area, Hance et al., 2001) and a subsiding area for Gendron (Dinant Sedimentation Area). The sedimentological model shows that both sections are characterized by a bioclastic dominated sedimentation (crinoids-peloids-algae assemblages), interrupted by more argillaceous facies related to rapid sea-level rises (crinoids-brachiopods-bryozoans assemblages). Accommodation was significantly higher in the DSA and allowed the development of Waulsortian buildups during the Ivorian. Variations of magnetic susceptibility (MS) seem to be related to fluctuations in detrital input and carbonate productivity. MS evolution with palaeogeography can be integrated in the Da Silva et al. (2009a) model for the Devonian ramp system: external ramp settings have low carbonate productivity, low water agitation and high MS, whereas more proximal environments are characterized by higher carbonate productivity, higher water agitation and lower MS. Carbonate buildups show the lowest MS and highest productivity. MS curves are in agreement with the 3rd-order sequential interpretation. Lowstand system tracts (LST) show the highest MS values while transgressive system tracts (TST) are characterized by decreasing values and highstand system tracts/ falling stage system tracts (HST/FSST) by the lowest values. [less ▲]

Sedimentology and magnetic susceptibility of the Couvin Formation (Eifelian, South Western Belgium): Carbonate platform initiation in a hostile world

in Geologica Belgica (2007), 10(1-2), 47-67

The Eifelian of Belgium is mainly characterised by a mixed siliciclastic-carbonate sedimentation on a ramp profile. In this context, the Couvin Formation is the more important and remarkable exception. It ... [more ▼]

The Eifelian of Belgium is mainly characterised by a mixed siliciclastic-carbonate sedimentation on a ramp profile. In this context, the Couvin Formation is the more important and remarkable exception. It represents a carbonate platform initiation in a hostile environment. This work is mainly based on the stratotype, corresponding to two stratigraphic sections located in Couvin, along the southern border of the Dinant Synclinorium. These sections are the Eau Noire and Falaise de l'Abime sections. Unfortunately, they are discontinuous. To allow a better understanding of the sedimentary dynamics, the data are complemented by a shorter but continuous section located in Villers-la-Tour (3.5 km West of Chimay). Petrographic study leads to the definition of 14 microfacies which are integrated in a palaeogeographical model. It corresponds to a platform setting where the reef complex is mainly constituted by an accumulation of crinoids, stromatoporoids and tabulate corals. The microfacies evolution is interpreted in terms of bathymetrical variations. It shows a general shallowing-upward trend encompassing the vertical succession of fore-reef settings, reef development, back-reef and then lagoon environment. This interpretation is supported by trends in mean magnetic susceptibility data, providing a better understanding of the sedimentary dynamics. Moreover, these data show positive correlation with concentrations of detritic minerals, but an inverse relationship with well washed skeletal limestones. The comparison of the three studied sections leads to considerations concerning the lateral variability in the Couvin Formation indicating more agitated conditions in the Abime Member in Villers-le-Tour section. [less ▲]

Sedimentology and magnetic susceptibility on a continuous Lower Givetian to Lower Famennian fore-reef succession (Sauerland, Germany) : A new example which reinforce the use of MS for long-distance correlations (Germany, Belgium and Moravia).

Poster (2011)

This study focuses on the continuous Givetian-Frasnian section of the abandoned Burgberg quarry (Messinghausen Anticline, northern margin of the Rhenish Mountains). The exposed section (102 m thick ... [more ▼]

This study focuses on the continuous Givetian-Frasnian section of the abandoned Burgberg quarry (Messinghausen Anticline, northern margin of the Rhenish Mountains). The exposed section (102 m thick) covers a well constraint stratigraphic interval starting at the base of the Givetian (Stritzke 1991;Aboussalam et al., 2003) and according to Stritzke (1991) and our new datations ending within the Lower Famennian. The Middle-Upper Devonian shelf-edge within the Rheinisches Schiefergebirge can be traced from the supposed position along the southern rim of the Dinant Syncline and the Eifel Synclines, northwards along a line connecting the southern margin of the Devonian reefal outcrops of Attendorn and Brilon (Krebs 1967, 1974). The depositional setting of the investigated section corresponds to complex slope and basinal environments where reworked material from the proximal Brilon platform (located to the north) and basin deposits coexist. Thus, this section allows to follow the evolution of the Givetian-Frasnian Brilon platform (e.g., Machel 1990; Stritze 1990, 1991) in a deeper setting. Petrographic analysis of more than 330 thin-sections leads to the identification of 7 microfacies which are integrated into a palaeoenvironmental model. Microfacies curve evolution shows two main trends. A shallowing upward trend ending within a typical proximal slope setting (dismantling of the platform) followed by a deepening upward trend which is characterized by several meter of pelagic mudstone within the upper part of the studied section. Magnetic susceptibility variations in sedimentary rocks, have commonly been interpreted as related to variations of detritic inputs through climatic or sea level changes (Crick et al., 1994). The magnetic susceptibility (MS) study of more than 330 samples from this long-time fore-reef carbonated succession is an opportunity to better constraint our sedimentological interpretations. To do so, we propose a comparison between general MS trends and some parameters such as microfacies and relative sea level fluctuations interpreted on the basis of the sedimentological study. The relatively long stratigraphic interval covered by the Burgberg section offers a good opportunity to compare our data with the time equivalent Devonian sections of the Ardennes (Belgium) and Moravian karst area (Czech Republic) (Boulvain et al., 2010). And thus to test the magnetic susceptibility tool for long-distance correlation between stratigraphically well constraint sections. [less ▲]